I have following issue.

After installation v 0.9.6 i get full signal, after ~20 seconds signal drops, i get seraching and finally no service.
After Plane mode on / off i get signal again. it drops , searching and no service.

If i use the phone (call or go to maps which uses the sim to get locaton) signal stays high and phone works like a charm until i go out of maps or stop calling which causes the signal to drop again, goes into search and no service.

Any hints/tips would be appreciated